Materials Literature
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Merino wool is the result of generations of selection, yet improvements in wool quality and performance are still being sought. Through gene manipulation, sheep transgenesis offers possibilities of understanding the relationship between wool keratin protein composition and fibre structure and properties and of introdu…
Abstract Bromomethyl poly (aryl ether ether ketone) has been prepared from methyl poly (aryl ether ether ketone) (MePEEK) and has been used as the precursor to many forms of functionalized PEEK. MePEEK was brominated directly with bromine. Bromination takes place exclusively at the methyl group. The reaction condition…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTProton NMR Spectroscopy as a Probe of Dinuclear Copper(II) CentersRichard C. Holz and Julie M. BrinkCite this: Inorg. Chem. 1994, 33, 21, 4609–4610Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994https://pu…
The hydrogen embrittlement of Cr–Mo steel has been studied. The effects of tempering temperature on the hydrogen diffusivity and hydrogen assisted cracking, without external stress, are investigated. Hydrogen permeation and trapping, for the various microstructural conditions, were measured using electrochemical equip…
X-ray- and polarized-neutron-diffraction measurements have been carried out on a single crystal of hexagonal ${\mathrm{Y}}_{2}$${\mathrm{Fe}}_{17}$ in order to determine the details of the structural disorder and local-Fe-moment distribution. The crystal structure as determined by X-ray diffraction indicates a disorde…
BACKGROUND: Pulmonary endothelial damage can be caused by agents that generate oxidants, e.g., bleomycin, hyperoxia, neutrophils or x-irradiation. In animals with intravascular cancer cells, there is increased tumor cell arrest and the subsequent formation of metastatic tumors at the sites of such endothelial injury.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHighly Versatile Methods for the Synthesis of Quinonylporphyrins via Benzannulation of Fischer Carbene Complexes and Palladium-Catalyzed Cross-Coupling ReactionsChi-Shing Chan, Andy K.-S. Tse, and Kin Shing ChanCite this: J. Org. Chem. 1994, 59, 20, 6084–6089Publication Date…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTColloidal Single Crystals of Silica Spheres in Alcoholic Organic Solvents and Their Aqueous MixturesT. OkuboCite this: Langmuir 1994, 10, 10, 3529–3535Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published inissue 1 October 1994https:…
The suitability of photodegradation and biodegradation technolo gies for specialty applications is discussed. The research on degradable polymers is reviewed with emphasis on the processes of photooxidation, pho tostabilization and photosensitization. The degradation mechanisms, reaction products, analytical procedure…
ADVERTISEMENT RETURN TO ISSUEPREVArticleImproved Syntheses and Structure of [MnIIIMnIV(O)2(phen)4](ClO4)3.cntdot.2CH3COOH.cntdot.2H2ORajesh Manchanda, Gary W. Brudvig, Susan de Gala, and Robert H. CrabtreeCite this: Inorg. Chem. 1994, 33, 22, 5157–5160Publication Date (Print):October 1, 1994Publication History Publish…
An X-ray powder diffractometer has been modified by the addition of a narrow-bandpass germanium pre-monochromator and a linear position-sensitive detector (LPSD) with its centre set at the normal θ –2 θ focusing condition. Diffraction data are recorded using a step-scan procedure in which the patterns recorded at each…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteraction of Copper(II) Dodecyl Sulfate with Poly(ethylene oxide) and Poly(vinylpyrrolidone): Self-Diffusion, Fluorescence Probing, and Conductivity StudyN. Kamenka, I. Burgaud, C. Treiner, and R. ZanaCite this: Langmuir 1994, 10, 10, 3455–3460Publication Date (Print):Octo…
The transition from rhombohedral phase to tetragonal in screen-printed lead zirconate titanate (PZT) thick films was studied using Raman-scattering spectroscopy, and the results were compared with those of x-ray-diffractometry investigations. The unfired films were subjected to rapid firing in an air atmosphere at tem…
Application of a Scale Inhibitor Squeeze Model To Improve Field Squeeze Treatment Design K.S. Sorbie; K.S. Sorbie Heriot-Watt U. Search for other works by this author on: This Site Google Scholar MingDong Yuan; MingDong Yuan Heriot-Watt U. Search for other works by this author on: This Site Google Scholar M.M. Jordan…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Weight Dependence of the Viscoelastic Properties of Polystyrene-Based IonomersJoon-Seop Kim, Katsuyuki Yoshikawa, and Adi EisenbergCite this: Macromolecules 1994, 27, 22, 6347–6357Publication Date (Print):October 1, 1994Publication History Published online1 May 200…
We make a theoretical study of the chevron and tilted structures in the smectic-A phase of a liquid crystal. These structures have been observed to occur in cells in which the director is oriented in the plane of the wall. We examine the hypothesis of Limat and Prost [Liq. Cryst. 13, 101 (1993)] that the layer bucklin…
The reversible photoisomerization and the thermal isomerization of azobenzene-based (Az.b.) groups covalently bound to (meth)acrylic (co)polymers were investigated in thin films. For the amorphous polymers it was found that a broad range of the thermal cis --> trans isomerization rates could be obtained by varying…
Abstract An efficient method for quantitative XPS analysis is the so‐called multiline approach. This method does not require standards, it takes into account the instrumental and matrix effects and it derives quantitative information from statistical analysis of all photoelectron intensities visible in the spectra. On…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular Motion of Isolated Polyethylene Chains in the Solid StateFrederic C. Schilling, Karl R. Amundson, and Piero SozzaniCite this: Macromolecules 1994, 27, 22, 6498–6502Publication Date (Print):October 1, 1994Publication History Published online1 May 2002Published iniss…
We have studied (LuC${)}_{2}$(${\mathrm{Ni}}_{2}$${\mathrm{B}}_{2}$) and (LuC)(${\mathrm{Ni}}_{2}$${\mathrm{B}}_{2}$) at ambient and high pressures. Superconductivity was discovered in (LuC${)}_{2}$(${\mathrm{Ni}}_{2}$${\mathrm{B}}_{2}$) at 2.9 K. Pressure was found to suppress both the electrical resistivity and the…